Wing of female of Paracladura trichoptera from Alexander (1981, fig. 4) Trichoceridae,
Manual of Nearctic Diptera
, Ottawa, p.301-304, (1981)
[1].

Wing of male of Trichocera garretti from Alexander (1981, fig. 3) Trichoceridae,
Manual of Nearctic Diptera
, Ottawa, p.301-304, (1981)
[1].

Wing of male of Diazosma hirtipennis from Alexander (1981, fig. 2) Trichoceridae,
Manual of Nearctic Diptera
, Ottawa, p.301-304, (1981)
[1].

Wing venation of Trichoceridae. The image was drawn by Giancarlodessi.

Wing of an winter crane-fly (Trichoceridae) found on snow in Slovakia. Probably it is Trichocera because it was found in winter and vein A2 is short. Other genus of this family Diazosma occurs in summer and early autumn and has longer A2 veinThe European families of the Diptera identification, diagnosis, biology,
, Utrecht, p.205, (2006)
[2].